package org.liuyuantao.thread.old;

import java.util.Random;

public class ThreadLocalTest {

    private static ThreadLocal<Integer> x = new ThreadLocal<Integer>();
    private static ThreadLocal<MyThreadScopeData> myThreadScopeData = new ThreadLocal<MyThreadScopeData>();

    public static void main(String[] args) {
        for (int i = 0; i < 2; i++) {
            new Thread(() -> {
                int data = new Random().nextInt();
                System.out.println(Thread.currentThread().getName()
                        + " has put data :" + data);
                x.set(data);
                MyThreadScopeData.getThreadInstance().setName("name" + data);
                MyThreadScopeData.getThreadInstance().setAge(data);
                new A().get();
                new B().get();
            }).start();
        }
    }

    static class A {
        public void get() {
            int data = x.get();
            System.out.println("A from " + Thread.currentThread().getName()
                    + " get data :" + data);
            MyThreadScopeData myData = MyThreadScopeData.getThreadInstance();
            System.out.println("A from " + Thread.currentThread().getName()
                    + " getMyData: " + myData.getName() + "," +
                    myData.getAge());
        }
    }

    static class B {
        public void get() {
            int data = x.get();
            System.out.println("B from " + Thread.currentThread().getName()
                    + " get data :" + data);
            MyThreadScopeData myData = MyThreadScopeData.getThreadInstance();
            System.out.println("B from " + Thread.currentThread().getName()
                    + " getMyData: " + myData.getName() + "," +
                    myData.getAge());
        }
    }
}

/**
 * 每个线程都维护自己的对象
 */
class MyThreadScopeData {
    private MyThreadScopeData() {
    }

    public static MyThreadScopeData getThreadInstance() {
        MyThreadScopeData instance = map.get();
        if (instance == null) {
            instance = new MyThreadScopeData();
            map.set(instance);
        }
        return instance;
    }

    private static ThreadLocal<MyThreadScopeData> map = new ThreadLocal<MyThreadScopeData>();

    private String name;
    private int age;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }
}
